Clamp puller



W L A SUTHE RLAND v 7 2,037,834

CLAMP FULLER Filed Sept. 5, 1955 patented Apr. 21, 1936 PATENT OFFlE Theinvention comprehends a tool specially de signed for pulling off thecable clamp or connector from a storage battery. Difficuity isfrequently encountered in attempting to detach the clamp or connectorfrom a battery post owing to its seizing or adhering to the post and theattendant likelihood of damaging the battery should the post hestrained.

The present invention has for its object the provision of a pullerhaving a pair of jaws that hook under the clamp and a pusher bar thatabuts the top of the battery post. By squeezing a pair of levers anupward pull is exerted on the jaws and at the same time a counteractingforce is applied on the post to relieve it of strain. Adequate purchaseis furnished to pull off the clamp While the battery is on its supportin the automobile.

The invention is comparatively simple of construction and inexpensive tomanufacture.

Referring to the accompanying drawing. Figure 1 illustrates theinvention in position over a battery clamp ready to remove it.

Figure 2 is a sub-assembly view showing the pusher bar and one of thejaws on an actuating lever.

Figure 3 is an edge view of the pusher bar.

Figure 4 is a cross section taken on line 44 of Figure 2.

Like numerals of reference indicate corresponding parts in each of thefigures of the drawing.

In the drawing, the reference numeral 5 denotes a conventional storagebattery of which one of the two terminal posts is indicated at 5. Thepost is shown fitted with the usual clamp 6 or what is frequently termeda connector, which serves to attach a cable to the post. The clamp issupplied with a fastening element which of course is loosened indetaching the clamp.

The puller comprises a pair of levers 6 having handle portions i andpivotally connected together for movement in scissor fashion. A bolt 8may be used for the pivot. The head end of each lever is enlarged as at9 and a jaw it is pivoted to each lever slightly to the rear of thefulcrum 8, the pivotal connection preferably being constituted by a boltas at l i.

Each jaw consists of a depending finger having an inturned hook terminusl2 adapted to engage the underface of the clamp ii. The jaws are free toswing to and away from each other in the plane in which the leversoperate.

The pusher bar It is disposed between the jaws and has a blunt head l4adapted to abut the top of the post 5'. Upwardly of the head M, thepusher bar is bifurcated to straddle the levers.

Each leg of the bifurcated portion is slotted inwardly from the upperend as at l5 so as to allow the headed bolt 8 to fit therein. This formsa guide for the pusher bar.

A pair of links it is pinned by a bolt ill or the like in theintermediate portion of the pusher bar so as to occupy the portion ofthe bifurcation below the levers. The links extend outwardly andupwardly in diverging directions and are pivoted to the respective headsof the lever at ii" forwardly of the fulcrum thereof. The links form atoggle joint with the heads of the levers in order to downwardly urgethe pusher bar as the levers are pressed towards each other. It will benoted that the slots l5 by their engagement with the fulcrum bolt 8preclude the pusher bar from turning askew on the bolt ll. The arcuateslots l8 provide clearance for the bolts H in the movement of thelevers.

In the use of this tool, it is placed as shown in Figure 1 over thebattery with the pusher bar resting on top of the post. The jaws arehooked under the clamp and then the levers are pressed together. Theinward movement of the levers pulls upwardly on the jaws and pressesdownwardly on the pusher rod by means of the link connections. The jawsthus force the clamp off the post while the pusher rod relieves thestrain of the battery.

What I claim is:-

1. A clamp puller comprising a pair of levers fulcrumed for movement toand away from each other, jaws carried by the levers for hooking un dera clamp, a pusher bar extending outwardly from the fulcrum of thelevers, a pair of links pivoted to the pusher bar at a common point,said links divergently extending and being pivoted to the levers inadvance of their fulcrum, and means for precluding the pusher bar fromturning askew on its pivotal connection with the links.

2. A clamp puller comprising a pair. of levers, a fastening elementpivotally securing the levers adjacent'an end thereof, the ends of saidfastening element protruding from the outer faces of said levers, a jawpivoted to each lever rearwardly of the fulcrum pivot of the lever, eachjaw being elongated and having a hook terminus, a pusher bar having ablunt head at one end and substantially bifurcated, the bifurcationhaving slots in which the protruding ends of the aforesaid fasteningelement are lodged, and a pair of links pivoted to the medial portion ofthe pusher bar and divergently extending to the levers, said links beingpivoted to the levers in advance of their fulcrum pivot to form a togglejoint.

3. A clamp puller comprising a pair of levers fulcrumed for movement toand away from each other, jaws carried by the levers for hooking under aclamp, a pusher bar extending outwardly from the fulcrum of the levers,a pair of links pivoted to the pusher bar at a common point, said linksdivergently extending and being pivoted to the levers in advance oftheir fulcrum, and means for precluding the pusher bar from turningaskew on its pivotal connection with the links, said means beingconstructed and arranged to compose a guide at the fulcrum point of thelevers so as to constrain the pusher bar to a reciprocable movement.

4. A clamp puller comprising a pair of levers fulcrumed for movement toand away from each other, jaws carried by the levers for hooking under aclamp, a pusher bar extending outwardly from the fulcrum of the levers,a pair of links pivoted to the pusher bar at a common point, said linksdivergently extending and being pivoted to the levers in advance oftheir fulcrum, and means for precluding the pusher bar from turningaskew on its pivotal connection with the links, said means consisting ofan element of the pusher bar disposed across the fulcrum of the levers,and a member laterally protruding from said fulcrum and having apositive guiding relation with said element.

ALFRED SUTHERLAND.

